<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<p id="demo">demo</p>
<script src="node_modules/velocity-animate/velocity.min.js"></script>
<script src="node_modules/velocity-animate/velocity.ui.min.js"></script>
<script>
  console.log(window)
  console.log(Window)
  window.Velocity(document.getElementById("demo"), {
    opacity: 0.5
  }, {
    duration: 1000
  });
</script>
</body>
</html>
